flex日期合并与拆分

<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009" 
               xmlns:s="library://ns.adobe.com/flex/spark" 
               xmlns:mx="library://ns.adobe.com/flex/mx"
               creationComplete="init(event)" minWidth="955" minHeight="600">
    
    <fx:Script>
        <![CDATA[
            import mx.controls.Alert;
            import mx.events.FlexEvent;
            import mx.formatters.DateFormatter;
            import mx.messaging.AbstractConsumer;
            
            import spark.formatters.DateTimeFormatter;
            
            private var dateTime_str:String = null;
            private var dateTime_date:Date = null;
            
            protected function init(event:FlexEvent):void
            {
                var nowDate:Date = new Date();
                this.dateTime.selectedDate = nowDate;
                this.hour.text = (String)(nowDate.hours);
                this.minute.text = (String)(nowDate.minutes);
            }
            
            //日期合并
            private function combineDate():void
            {
                var dateTimeFormatter:DateTimeFormatter = new DateTimeFormatter();
                dateTimeFormatter.dateTimePattern = "yyyy-MM-dd";
                var nowDate_str:String = dateTimeFormatter.format(this.dateTime.selectedDate);
                dateTime_str = nowDate_str + " " + this.hour.text + ":" + this.minute.text;
                dateTime_date = DateFormatter.parseDateString(dateTime_str);
                //Alert.show(dateTime_date.toString(), "promt");
                this.displayDate.text = dateTime_str;
            }
            
            //日期拆分
            protected function btnClickHandler(event:MouseEvent):void
            {
                this.combineDate();
                var str_a:String = this.dateTime_str;
                var date_a:Date = this.dateTime_date;
                
                /*  //Method1
                var day_a:String = (String)(date_a.fullYear) + "-" + (String)(date_a.month) + "-" + (String)(date_a.date);
                var hour_a:String = (String)(date_a.hours);
                var minute_a:String = (String)(date_a.minutes);
                //Alert.show(str_a, "promt");
                //Alert.show(day_a, "day_a");
                this.getTime.text = day_a;
                this.getHour.text = hour_a;
                this.getMinute.text = minute_a; */
                
                //Method2
                this.getTime.text = str_a.substr(0, 10);
                this.getHour.text = str_a.substr(11, 2);
                this.getMinute.text = str_a.substr(14,2);
            }
            
        ]]>
    </fx:Script>
    
    <fx:Declarations>
        <!-- Place non-visual elements (e.g., services, value objects) here -->
    </fx:Declarations>
    <s:VGroup>
        <s:HGroup>
            <mx:DateField yearNavigationEnabled="true" id="dateTime" width="110" dayNames='["周日","周一","周二","周三","周四","周五","周六"]'
                          monthNames='["一月","二月","三月","四月","五月","六月","七月","八月","九月","十月","十一月","十二月"]'
                          formatString="YYYY-MM-DD"/>
            <s:TextInput id="hour" maxChars="2" restrict="0-9" width="20"/><s:Label text="时"/>
            <s:TextInput id="minute" maxChars="2" restrict="0-9" width="20"/><s:Label text="分"/>
        </s:HGroup>
        <s:HGroup>
            <s:Label text="显示日期"/><s:TextInput id="displayDate"/>
        </s:HGroup>
        <s:HGroup>
            <s:Button id="btn1" label="Combine" click="combineDate()"/>
            <s:Button id="btn2" label="Split" click="btnClickHandler(event)"/>
        </s:HGroup>
        <s:HGroup>
            <s:Label text="显示日期"/><s:TextInput id="getTime"/>
            <s:TextInput id="getHour" width="40"/><s:Label text="时"/>
            <s:TextInput id="getMinute" width="40"/><s:Label text="分"/>
        </s:HGroup>
    </s:VGroup>
</s:Application>